I am doing some additional homework and will post my findings.

Additionally, you could not move your Roth IRA funds into a Solo(k) because for some reason unknown to even the Department of Treasury (I asked them) Roth IRAs cannot transfer into the Roth bucket of a Solo 401(k).

I was able to get the HOA to approve the addition of another small dock right behind my house with a 23 x 8 foot slip 2 years ago.

I'm working on closing a 28 unit mixed use property in WA State using seller financing once we get the additional capital required by the seller.

In addition, doing fewer deals than that will most likely mean that they don't have a legit team of pros to back you- PM, GC, Plumber, lender, etc- if they aren't feeding them constant business, those contractors won't drop their current jobs to help you in an emergency. 

Additional Context:- I'm usually a DIY everything guy because I grew up doing construction and farm work.

In addition to the solid list from Joshua, Typically LLC costs.

I've heard of folks using the equity in their rental properties to purchase additional properties and I'm trying to learn if this would make sense for me.

If you decide to go this route, you could inform the tenants that they will be responsible for a separate monthly utilities charge in addition to their rent.

Do you intend to purchase additional properties?